Composition of matter for the removal of ink.



252. COMPOSITIONS,

UNITED STATES PATENT OFFICE.

ALBERT R. MAYER, OF NEW YORK, N. Y., ASSIGNOR TO EDWARD G. SOLTMANN, OFNEW YORK, N. Y.

Specification of Letters Patent.

Patented Feb. 1 1, 1908.

Application filed November 15. 1907. Serial No. 402.228-

T 0 all whom it may concern:

Be it known that I, ALBrRT R. MAYER, a naturalized citizen of the UnitedStates, and a resident of New York, in the county of New York and Stateof New York, have invented certain new and useful Improvements in theComposition of Matter for the Removal of Ink, of which the following isa specification. i-Iy invention relates to a'new and useful compositionof matter to be used particularly for the removal of ink and otherwriting fluids from tracing cloth and similar material. My compositionconsists of a mixture of the following ingredients, combined insubstantially the proportions stated, viz:

Sweet spirit of niter (U. S. P.) 3 parts Peroxid of hydrogen (U. S. P.)1 part. The above composition may be diluted with one-third of itsvolume of ethyl alcol 1,

if it be not required to be kept or a ong time, the decomposition beinghastened by the addition of the alcohol and retarded by keeping thesolution in a dark glass bottle or a bottle protected against light. Iprefer to add some perfuming ingredient such as b51- amot to alter theodor. I also prefer to add a 00 bring material resembling somewhat thetint of the cloth upon which the solution is to be applied, and for thispurpose I have found methyl blue satisfactory for solutions adaptetT'toe applied to the usual bluetinted tracing cloth. Should the solutionhave any tendency to stain the cloth this said solution being of the:color of said cloth, such stain will not be particularly noticeable.

In mixing the ingredients, the perfume and coloring material (ifdesired), are first added to the peroxid of hydrogen in quantitysullicient to give the desired odor and tint. This mixture is then mixedwith the s w .t s iirit gf i i ter, whereupon the solution ism use.

The proportion of the various ingredients as set forth above may, ofcourse, be varied within reasonable limits without departing from myinvention.

In using the above described composition for removing ink and the likefrom tracing cloth and similar material, the solution is 5 applied tothe same by means of a brush, sponge or cloth moistened therewith. Aftera few moments this may then be wiped up and removed with a piece ofblotting paper, or by wiping with a piece of soft cloth.

i In removing a portion only of a line, or some other specific part ofdrawings, a number of pieces of blotting paper with a glazed uppersurface, or other pieces of paper, eras- I ing shields and the like, areplaced about the 1 part to be removed so as to isolate it from the rest;and the ink then wiped out as explained. The ink is thus thoroughlyremoved from the cloth, without causing any injury to the said cloth,particularly if applied to the dull 'or unglazed side of the cloth; andleaves the surface of the same so that the ink can be again appliedwithout danger of spreading.

I claim':

1. The herein described composition of matter, consisting of a mixtureof sweet spirit of niter and peroxid of hydrogen, substantially asdescribed and for the purpose specified.

2. The herein described composition of matter for removing ink fromtracing cloth and the l ke, consisting of a mixture of sweet spirit ofniter-three parts, and hydrogen peroxidone part, substantially asdescribed.

3. The herein described composition of matter for removing ink fromtracing cloth and the like, consisting of a mixture of sweet spirit ofniter, hydrogen peroxid, and a coloriing material of substantially thecolor of said tracing cloth.

4. The herein described composition of matter for removing ink fromtracing clot-h, consisting of a mixture of sweet spirit of niter,hydrogen peroxid, and methyl blue, substantially as described.

Signed at New York, in the county of New York and State of New York this13th day of November A. D. 1907.

ALBERT R. MAYER.

Witnesses FREDK. F. SCIIUETZ, SALLY O. YUDIZHY.

